xref: /freebsd/include/runetype.h (revision 3ff369fed2a08f32dda232c10470b949bef9489f)
1 /*-
2  * Copyright (c) 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Paul Borman at Krystal Technologies.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. All advertising materials mentioning features or use of this software
17  *    must display the following acknowledgement:
18  *	This product includes software developed by the University of
19  *	California, Berkeley and its contributors.
20  * 4. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  *
36  *	@(#)runetype.h	8.1 (Berkeley) 6/2/93
37  * $FreeBSD$
38  */
39 
40 #ifndef	_RUNETYPE_H_
41 #define	_RUNETYPE_H_
42 
43 #include <sys/cdefs.h>
44 #include <machine/ansi.h>
45 
46 #ifdef	_BSD_RUNE_T_
47 typedef	_BSD_RUNE_T_	rune_t;
48 #undef	_BSD_RUNE_T_
49 #endif
50 
51 #ifdef	_BSD_SIZE_T_
52 typedef	_BSD_SIZE_T_	size_t;
53 #undef	_BSD_SIZE_T_
54 #endif
55 
56 #ifdef	_BSD_WCHAR_T_
57 typedef	_BSD_WCHAR_T_	wchar_t;
58 #undef	_BSD_WCHAR_T_
59 #endif
60 
61 #define	_CACHED_RUNES	(1 <<8 )	/* Must be a power of 2 */
62 #define	_CRMASK		(~(_CACHED_RUNES - 1))
63 
64 /*
65  * The lower 8 bits of runetype[] contain the digit value of the rune.
66  */
67 typedef struct {
68 	rune_t		min;		/* First rune of the range */
69 	rune_t		max;		/* Last rune (inclusive) of the range */
70 	rune_t		map;		/* What first maps to in maps */
71 	unsigned long	*types;		/* Array of types in range */
72 } _RuneEntry;
73 
74 typedef struct {
75 	int		nranges;	/* Number of ranges stored */
76 	_RuneEntry	*ranges;	/* Pointer to the ranges */
77 } _RuneRange;
78 
79 typedef struct {
80 	char		magic[8];	/* Magic saying what version we are */
81 	char		encoding[32];	/* ASCII name of this encoding */
82 
83 	rune_t		(*sgetrune)(const char *, size_t, char const **);
84 	int		(*sputrune)(rune_t, char *, size_t, char **);
85 	rune_t		invalid_rune;
86 
87 	unsigned long	runetype[_CACHED_RUNES];
88 	rune_t		maplower[_CACHED_RUNES];
89 	rune_t		mapupper[_CACHED_RUNES];
90 
91 	/*
92 	 * The following are to deal with Runes larger than _CACHED_RUNES - 1.
93 	 * Their data is actually contiguous with this structure so as to make
94 	 * it easier to read/write from/to disk.
95 	 */
96 	_RuneRange	runetype_ext;
97 	_RuneRange	maplower_ext;
98 	_RuneRange	mapupper_ext;
99 
100 	void		*variable;	/* Data which depends on the encoding */
101 	int		variable_len;	/* how long that data is */
102 } _RuneLocale;
103 
104 #define	_RUNE_MAGIC_1	"RuneMagi"	/* Indicates version 0 of RuneLocale */
105 
106 extern _RuneLocale _DefaultRuneLocale;
107 extern _RuneLocale *_CurrentRuneLocale;
108 
109 #endif	/* !_RUNETYPE_H_ */
110